Note Payable - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jan. 04, 2013 USD ($)
Debt Instrument [Line Items]
Interest expense	$ 1,332,000		$ 2,574,000	$ 2,000
Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt issuance costs			4,721,000
Amortization of debt issuance costs	239,000		458,000
Capitalization of interest expense and amortization of debt issuance costs	1,127,000		2,412,000
Amounts outstanding under Revolving Credit Facility	0		0
Net availability under the Revolving Credit Facility	10,000,000		$ 10,000,000
Secured Credit Facilities [Member] | Credit Agreement [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Interest rate, Description			Base rate plus 3.75%
Interest rate, Percentage			3.75%
Secured Credit Facilities [Member] | Credit Agreement [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate, Description			LIBOR plus 4.75%
Interest rate, Percentage			4.75%
Secured Credit Facilities [Member] | Credit Agreement [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest rate, Description			LIBOR floor of 1.00%
Interest rate, Percentage			1.00%
Maximum [Member] | Secured Credit Facilities [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes					$ 160,000,000
Consolidated leverage ratio			5.00
Maximum [Member] | Revolving Credit Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes					10,000,000
Minimum [Member] | Secured Credit Facilities [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio			1.00
Consolidated liquidation cost			$ 7,500,000
Senior Notes [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, description			Pursuant to the Credit Agreement, the Lender provided secured credit facilities (“the Secured Credit Facilities”) in an aggregate amount of $160,000 comprised of (i) a term loan facility in an aggregate principal amount of up to $70,000 (the “Initial Term Loan Facility”); (ii) a $10,000 revolving credit facility (the “Revolving Credit Facility”); (iii) a term loan facility in an aggregate principal amount of up to $10,000 (the “Term B2”), the proceeds of which were used on January 16, 2015 to finance the InSync Acquisition; and (iv) a term loan facility in an aggregate principal amount of up to $70,000 (the “Term B3”), the proceeds of which were used on January 1, 2015 to finance the SkyWave Acquisition. Proceeds of the Initial Term Loan Facility and Revolving Credit Facility were funded on October 10, 2014 and were used to repay in full the Company’s Senior Notes and pay certain related fees, expenses and accrued interest, as well as for general corporate purposes.
Secured Credit Facilities , Maturity period			5 years
Initial Term Loan Facility [Member] | Maximum [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes					70,000,000
Term B2 [Member] | Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Interest expense	$ 1,332,000		$ 2,574,000
Term B2 [Member] | Maximum [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes					10,000,000
Term B3 [Member] | Maximum [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes					$ 70,000,000
9.5% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Issuance of senior secured notes						$ 45,000,000
Debt issuance costs			$ 1,390,000
Amortization of debt issuance costs		$ 66,000		$ 136,000
Note bears interest rate	9.50%		9.50%
Maturity date			Jan. 04, 2018
Senior Notes, redemption date			Oct. 10, 2014
9.5% Senior Secured Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio			4.5
9.5% Senior Secured Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Available liquidity	$ 10,000,000		$ 10,000,000
Leverage ratio			1.0